Closure



FIG. 1 is a perspective view of the closure of my design;

FIG. 2 is a side elevation thereof.

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The broken line showing of a bottom portion of the closure is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a closure, as shown and described. 